Optimum location for panel surge protection device

[ATSman]

SPD

SPD

I have posted the attached before.
Also you can do a search for SPD, TVSS on this forum for past posts.

 

[Brian_ZSI]

Stages of surge protection

Stages of surge protection

As Ive seen with AC circuits, parallel surge protection is best utilized closest to the load. The protection is initially built to maintain a voltage protection rating at the site of protection. This does not include down the line- as the document above describes, the "traveling wave" of energy could manage to reach equipment before properly reduced. To engineers, we would prefer the energy not travel down the Line or major currents through the whole length of the Neutral. This current is seen as a risk to safety and other devices, so panel-mount surge protectors are suggested. Also, there are surge events that occur from within the branch from various types of loads which are unseen by panel mount surge protection until the whole branch has been exposed (closer to your original project, starting the conversation). From these details, its suggested to have a panel mount and local surge protection at each load.

If surge problems occur more frequently on the Line, I would suggest high line inductance series mode protection to reduce repair calls- but these often have current/VA restrictions and high price tags.

 

[topgone]

Yeah but what determines as close as possible? "Possible" implies lack of surety that it matters.

So if the panel is already populated but at the bottom, do we have to move all breakers? Or does the "as possible" part mean it doesn't matter if inconvenient? Is there a practical difference because there is a minor esr difference in a large fault current, or is the fact that the fault current is high mean it doesn't much matter? Does L di/dt apply to the inductance of the bus bar, and the length to the SPD changes inductance much? Does the entire electrical,distribution downstream turn into one big inductor if it's not bled off in the first position?

This isn't a "read the manual" question. That's exactly why I put it in the electrical calculations and engineering section, so the theory could be discussed instead...

IMO, to verify if anything said is true, why not install your SPD at the farthest point of your service and see if you don't smoke your expensive units?:lol::lol:

 

[Fulthrotl]

That would be a Type 1.

http://www.nemasurge.org/wp-content...cation-Considerations-Rev-Date-01-31-2013.pdf

can anyone recommend a manufacturer of these?
it looks to be the most expedient whole house solution.

pull meter, slam in device, replace meter. move on.

edit.

amazon.

[h=1]Leviton 50240-MSA 120/240 Volt 200 Amp, Secondary Surge Arrestor, Surge Protective Device 4 Jaw Socket Meter Socket[/h]
$189. next day delivery.